An endearing act of intimacy or light petting. When you gently rub your nose against the cheeks of another person, that is called a "nuffle". Also known as an Eskimo Kiss, this is a non-sexual, affectionate gesture that you can do to a lover, or a family member.

HMB: Is it polite to keep your eyes open when you nuffle?

AC: Sure, why not? Nuffling isn't like kissing. It's just like a hug. Except you use your face.